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MySQL database backup and restore PHP class

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MySQL database backup and restore PHP class

<?php
class DBManage
{
  var $db; // 数据库连接
  var $database; // 所用数据库
  var $sqldir; // 数据库备份文件夹
  var $record;
  // 换行符
  private $ds = "n";
  // 存储SQL的变量
  public $sqlContent = "";
  // 每条sql语句的结尾符
  public $sqlEnd = ";";
  /**
   * 初始化
   *
   * @param string $host
   * @param string $username
   * @param string $password
   * @param string $thisatabase
   * @param string $charset
   */

Description: The volume file ends with _v1.sql

Function: Implement mysql database volume backup, select tables for backup, and implement single sql file and volume sql import

Usage:

1. Database backup (export)-------------------------------- ----------------------------

//They are the host, user name, password, and database name respectively. , database encoding

$db = new DBManage ('localhost', 'root', 'root', 'test', 'utf8' );

//Parameter: which table to back up ( Optional), backup directory (optional, default is backup), volume size (optional, default is 2000, which is 2M)

$db->backup ();

* ------2. Database recovery (import)--------------------------------------------- -----------------------

//They are the host, user name, password, database name, and database encoding

$db = new DBManage ('localhost', 'root', 'root', 'test', 'utf8' );

//Parameter: sql file

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There is no absolutely optimal MySQL database backup and recovery solution, and it needs to be selected based on the amount of data, business importance, RTO and RPO. 1. Logical backup (mysqldump) is simple and easy to use, suitable for small databases, but slow and huge files; 2. Physical backup (xtrabackup) is fast, suitable for large databases, but is more complicated to use. The backup strategy needs to consider the backup frequency (RPO decision), backup method (data quantity and time requirement decision) and storage location (off-site storage is more secure), and regularly test the backup and recovery process to avoid backup file corruption, permission problems, insufficient storage space, network interruption and untested issues, and ensure data security.

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Oracle database backup can be implemented through RMAN backup, export/import utility, and logical backup (Flashback). Restore principles vary according to the backup type, including: RMAN backup and restore, export/import export and restore, logical backup (Flashback) restore. The specific restore process involves starting the RMAN connection database, restoring the backup set using the RESTORE/RECOVER command, exporting/importing files, rebuilding and permissions, and using the Flashback command to restore to a specific point in time.

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Simple method to backup and restore MySql in php, restore mysql in php. How to simply back up and restore MySql in php, restore mysql in php This article describes the simple backup and restore method of MySql in php. Share it with everyone for your reference, the details are as follows: 1. Backup: